bsl::vector<MetricSampleGroup>::front

front overloads

Synopses

Declared in <bslstl_vector.h>

Return a reference providing modifiable access to the first element in this vector. The behavior is undefined unless this vector is not empty.

reference
front();

Return a reference providing non‐modifiable access to the first element in this vector. The behavior is undefined unless this vector is not empty.

const_reference
front() const;

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